The Open Syllabus Explorer? https://opensyllabus.org/ https://opensyllabus.org/ The search results for "astrodynamics" [1] include several of ht ebooks listed

The Open Syllabus Explorer? https://opensyllabus.org/ https://opensyllabus.org/ The search results for "astrodynamics" [1] include several of ht ebooks listed above; clicking on the entry for Bate shows the co-assigned books, which inlcudes all of them. [1]: https://opensyllabus.org/results-list/titles?size=50&findWorks=astrodynamics https://opensyllabus.org/results-list/titles?size=50&findWor... [2]: https://opensyllabus.org/result/title?id=55740085568884 https://opensyllabus.org/result/title?id=55740085568884